/*
 * Copyright 2022 Google LLC
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef skgpu_graphite_DawnSharedContext_DEFINED
#define skgpu_graphite_DawnSharedContext_DEFINED

#include "webgpu/webgpu_cpp.h" // NO_G3_REWRITE

#include "include/gpu/graphite/dawn/DawnBackendContext.h"
#include "src/gpu/graphite/SharedContext.h"
#include "src/gpu/graphite/dawn/DawnCaps.h"

namespace skgpu::graphite {
struct DawnBackendContext;
struct ContextOptions;

class DawnSharedContext final : public SharedContext {
public:
    static sk_sp<SharedContext> Make(const DawnBackendContext &, const ContextOptions &);
    ~DawnSharedContext() override;

    std::unique_ptr<ResourceProvider> makeResourceProvider(SingleOwner *, uint32_t recorderID,
        size_t resourceBudget) override;

    const DawnCaps *dawnCaps() const
    {
        return static_cast<const DawnCaps *>(this->caps());
    }
    const wgpu::Device &device() const
    {
        return fDevice;
    }
    const wgpu::Queue &queue() const
    {
        return fQueue;
    }
    const wgpu::ShaderModule &noopFragment() const
    {
        return fNoopFragment;
    }

    bool hasTick() const
    {
        return fTick;
    }

    void tick() const
    {
        SkASSERT(this->hasTick());
        fTick(fDevice);
    }

private:
    DawnSharedContext(const DawnBackendContext &, std::unique_ptr<const DawnCaps> caps,
        wgpu::ShaderModule noopFragment);

    wgpu::Device fDevice;
    wgpu::Queue fQueue;
    DawnTickFunction *fTick;
    // A noop fragment shader, it is used to workaround dawn a validation error(dawn doesn't allow
    // a pipeline with a color attachment but without a fragment shader).
    wgpu::ShaderModule fNoopFragment;
};
} // namespace skgpu::graphite

#endif // skgpu_graphite_DawnSharedContext_DEFINED
